Posterheroes is an international contest about social design and social communication asking to the international creative community to express powerful messages through a poster 50×70 cm or 70×100 cm about social and environmental issues. The contest, created in 2010 by PLUG association, is open to everyone and aims to involve especially young people and international artists. 8763 posters were sent in these years, from 103 different nations. The winning posters are selected by a selection panel comprising international experts in the field of illustration, animation, arts, visual communication (55 members so far). PLUG communicates the results through different initiatives. Two catalogues, made with the support of Favini, three calendars and several public exhibitions has been realized to promote the value of the winning posters and to disseminate their messages. Open spaces, art galleries, public areas: the opinion of the young creatives is shared and discussed widely.